How and why did relations between the United States and American Indian nations change between 1830 and 1900?

Which of the following was the center source of energy during the industrial a revolution

Why did president johnson decide not to run for reelection in 1968?

The current population of a city can be represented by "p." the population is expected to increase by 6.5% next year. write an expression in simplest form that represents the expected population next year.